@Richard-Oldfield and I will add...just stick with that coupling and keep trying. There is a “how to breed” calculator at DragonCityGuide(.)net (remove the () for link). It is pretty accurate and lists the percentage of success. But, once you set up a breeding, just stick with it. Sometimes it takes months. Just depends on luck. Took me over 8 months to get Poo. We all seem to have 1 that was really, really difficult.